Question: Which war's did the Soviet Union take part in.
Paraphrase: The Soviet Union took part in what war?
SPARQL (Wikidata):  select distinct ?sbj where { ?sbj wdt:P710 wd:Q15180 . ?sbj wdt:P31 wd:Q198 } 
Answer: Soviet–Afghan War, Continuation War, Winter War, Lapland War, Pacific War, Eastern Front, Soviet–Japanese War, Ogaden War, War of Attrition, First Nagorno-Karabakh War, Soviet–Japanese border conflicts, Russo-Finnish wars, Chechen–Russian conflict, Liberation of East Finnmark, Urtatagai conflict, Korean War